<!-- <p class="red">
  我是根组件
  {{title}}
</p> -->

<!-- <div class="content">
  {{title}} app is running!
</div> -->


<!-- <div class="course">
  <span class="description">{{courseObj.description}}</span>
</div>
<h1>引入头部</h1>
<app-header></app-header> -->


<!-- <app-news></app-news> -->

<!-- <app-home></app-home> -->

<!-- <app-form></app-form> -->

<!-- <app-search></app-search> -->
<app-todolist></app-todolist>
<router-outlet></router-outlet>